Which planet emits an ear-piercing series of chirps and whistles that could be heard by any aliens?

Question

Which planet emits an ear-piercing series of chirps and whistles that could be heard by any aliens?

Answer 1

Most chirps and whistles are attributed to anything transmitting in the hydrogen spectrum.

Although one of the most common compounds in the universe the spectrum is very quiet when you look at it from the radio signal aspect.

If a planet emitted signals in the hydrogen spectrum it would almost certainly be picked up due to it standing out against the relatively low background signals.

Answer 2

I solve all my problems by putting my friends in blocks of cement

I think you should to

Answer 3

Earth  

http://science.nasa.gov/headlines/y2001/...

Answer 4

earth creates a really ugly ear piercing noise out into space that is caused by solar flares hitting the earths atmosphere creating the auroras. jupiter and saturn are believed to also create a similar sound. you could probably find  the sound online somewhere